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R. S. TYLER INKING MECHANISM FOR PRINTING PRESSES Jan. 3, 1928.

Filed QQt- 22. 1923 2 Sheets-Sheep l INVENTOR. ZL/er ATTORNEY Jan. 3, 1928.

Filed Oct 22, 1923 2 Sheets-Sheet 2 INVENTOR..-

Tyl r g ATTORNE Patented Jan, 3, 192g isintrn s. manna; or ctnvnnaun, oi-IIo, assrenon E0 COMPANY.

THE CHANDLER AND ERIC-E i INKIIN'G- MECHANISM FOR PBITRTTING- PREESEE;

Application filed October 22 15328.

Clhe presentimprovements, relating, as indicated, to printing presses, have more particular regard to printing presses of the socalled platen or Gordon type, the object of the invention being to provide in substitution for the inking disk or disks, wherewith presses of this type are regularly equipped, a square stationary plate from WhlC-ll the ink ujiuy be transferred to the form by form inking rolls,'just as at present.

To the accomplishment of the foregoing and related ends, the invention, then, c0nts of the means hereinafter fully described and particularly pointed out in the claimsthe annexeddrawings and the following description setting forth in detail certain mechanism embodying the invention, such disclosed means constituting, however, but one of various mechanical forms in which the principle of the invention may be used. In said annexed drawings 1* i l is a front elevation of aGordon or platen'press constructed in accordance with my invention; and Fig. 2 is a side elevation of the portion of such press which is of present interest. 1

Of the press, which is of familiar construction, as statechonly those parts which directly co-operate. with my novel design of inking mechanism are illustrated in the drawings. Of. such parts, the principal ones are the usual form-carrying bed 1, the oscillatory roller frame 3, the arms or links 1- which rock said bed, andthe arms or links 5 which oscillate said frame. Carried by frame 3 is the usual inking device for transferring ink to the form on bed 1, such device comprising a series of composition rolls 6, 7 and 8, suitably mounted at their respective ends in saddles 9 and 10 carried by frame 3.

In place, however, of employing a rotatable disk with its lower edge disposed contiguously to the'upper side of form 1, so that said inking rolls 6, 7 and 8 maypass from the one to the other, and vice versa, as the frame 3 is oscillated, I have substituted a stationary plate 12 of general rectangular form. This plateis conveniently mounted on the same bracket 13 that has heretofore been utilized to support such disk, inclines at the same angle as such plate, and is disposed with its lower edge, which of course isstraight instead of circular, in approximately the same relation Serial No. 669,987.

to the bed l. Accordingly, the aforesaid rolls may pass from said bed onto said plate iu tlie rourse of their travel upwardly and then back again as they are moved downwardly to. their lowermost position which is that shown in Fig. 2. i Suitably supported, as bymeans of arms 15 that project rearwardly from bracket 13, an int: fountain 16 shown as of standard c' :ruction, such fountain rising above and l in parallel relation to the rear edge o plate 153. Such fountain includes a roll '12'that, upon rotation in a counterclockwise direction, as viewed in Fig, 2, receives on its surface a film of ink from the fountain, as will be readily understood.

dournaleiil in suitable bearings 18, convcniently provided in theurnis 15 which thus support the ink fountain, is a transverse shaft 19, and mounted on each end of such shaft is a spur pinion 20, that engages with a coiraponding rack bar. 21, suitably guided at it rcacend in lilOclIsQ-Q that project laterally from the plate 12. The. forward ones of said rack bars are respectively attached to f amen on, the order of the saddles 9 and 10, wherein are journaled the coricspoiuling ends of shafts that carry ink rolls Q4, 25 and 26. The first two of said rolls restdircctly on the surfaceof plate 12, while the third, which a distributing roll, rests upon such first rolls and may have, in addition to the rotative movement imparted thereby, a longitudinally vibratory movement. 1

FLOII] the foregoing construction, it will be seen that upon rotation of shaft 19. in a COl.llll(3l.'-OlOClWlSB direction, as viewed in .lT' 2, the frames or saddles which thus carry rolls 24,25 and 26, will be moved from theposition shown in full lines in said figure to that shown in dotted outline, while upon reverse rotation of the shaft, a reverse movement of the rolls produced. In the position thus shown in dotted outline, the uppermost roll 24, or if desired the riding roll 26. is brought into contact with roll 17 of he iul; fountain and receives apredetermined amount of inli therefrom. On the downward travel. of the rolls across the plate 152, this ink is distributed by said rolls, as need not he explained in detail, onto the surface of the plate, such distribution being further insured by the action of the rolls on the return movement.

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Rotation of shaft 19 to produce the foregoing results may be obtained in any desired way, but, as shown, I provide a segmental gear 25 that is rotatably mounted on a stud 26 projecting laterally from bracket 13, the teeth of such gear meshing with a pinion 27 on one end of said shaft 19. A link or arm 28 in turn connects said segmental gear with the operating mechanism of the press so that said gear will be oscillated in proper synehronism with the movement of frame 3. in other words, the rolls 24-, 25 and 26 are moved from the position shown in dotted outline in Fig. 2 to the lower edge of the plate and back again during the interval following the passage of the form inking rolls 6, 7 and 8 from off said plate onto the form and their return onto the plate. It will be understood of course that the return movement of the first named or ink distributing rolls may be timed so that they just precede the return movement of the form inking rolls and their downward movement may begin just as soon as the downward movement of said inking rolls begins.

As a result of the foregoing construction, I am able to control the distribution of ink on the inking rolls 6, 7 and 8, so as to meet the varying requirements of different forms.

A square or rectangular plate, m-oreover,

presents a larger area than a circular disk, and better cutting action of the distributing rollers on the ink is so obtained. At the same time by having a plain, rectangular plate, whereon the ink is initially distributed, which plate remains at all times sta tionary, the construction and operation of this portion of the press is much simplified. Such plate, moreover, may be much more readily cleaned than the usual arrangement of disks.

Other modes of applying the principle of my invention may be employed instead of the one explained, change being made as regards the mechanism herein disclosed, provided the means stated by any of the following claims or the equivalent of such stated means be employed.

I therefore particularlypoint out and distinctly claim as my invention v 1. In a platen printing press, the combination with the bed and a set of inking rolls adapted to be moved across and in contact with said bed; of an inking plate adjacent the upper edge of said bed and in position to contact with said rolls in the upper range of travel thereof; means for distributing a film of ink on said plate, said means in eluding a second setof rolls reciprocable across said plate, a reciprocable rack connected with said second set of rolls, and a toothed member above said bed for driving said 1 and means independent of said rack for actuating the first-mentioned set of inking rolls.

in a platen printing press, the combination with the bed and a set of inking rolls adapted to be moved across and in contact with said bed; of a stationary plate of general rectangular form supported with one edge adjacent to the upper edge of said bed and in position to contact with said rolls in the upper range of travel thereof beyond said bed; and means for distributing a film ink on said plate, said means including a (ti second set of rolls movable up and down s said plate, a reciprocable rack con- *d with said second set of rolls at each thereof and lying along the correspondside of said plate, and a shaft journaled hen 1th said plate and provided with pinions in mesh with said racks, respectively, whereby upon rotation of said shaft said srcond set of rolls will be moved in one direction or the other across said plate.

11in platen printing press, the combination with the bed and a set of inking rolls adapted to be moved across and in contact with said bed; of a stationary plate of gentangnlar form supported with one erai edge ad acent to the upper edge of said bed and in position to contact with said rolls in the upper range of travel thereof beyond said bed; and means for distributing a film of ink on said plate, said means including a second set of rolls movable up and down across said plate, a reciproeable rack connected with said second set of rolls at each end thereof and lying along the correspond ing side of said plate, a shaft journaled beneath said plate and provided with pinions in mesh with said racks, respectively, whereby upon rotation of said shaft said second set of rolls will be moved in one direction or the other across said plate, a third pinion on said shaft, a segmental gear in mesh with said third pinion, and means for oscillating said gear in synchronism with the movement of said first set of rolls.

Signed by me, this 18th day of October,

RALPH S. TYLER.

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